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Всего публикаций в данном разделе: 32

Книги

Авторы:
все А Б ВГ Д Е ЖЗИ ЙК Л М Н О П Р С Т У ФХ ЦЧ Ш ЩЭЮЯ
A B C D E F G H I J K L M N O PQ R S T U V W X Y Z
 
Названия:
А БВ Г Д ЕЖЗ ИЙК ЛМ Н О П Р С Т У ФХЦ ЧШЩЭ ЮЯ
A B C D E F G H I JKL M N O P Q R S T U V W XY Z
 

Опубликовано на портале: 04-01-2004
Julian M. Alston, Philip G. Pardey
Berlin, 2000
Estimated rates of return to research are distorted by problems of attributing the credit for particular research results, or for particular research-induced productivity increases, to research expenditures undertaken at different times, in different places, and by different agencies. A comprehensive assessment of the evidence from past economic evaluations of the returns to agricultural R&D indicates that studies generally report high rates of return, with enormous variation among studies, but that much of this evidence has been tainted by inadequate attention to attribution problems. br>
This paper raises these concerns in a general way, and illustrates their importance with reference to two particular types of attribution problem. First, we consider the problem of accounting for locational spillovers in attributing varietal improvement technology among research performers, using U.S. wheat varieties as an example. Second, we consider the temporal aspects of the attribution problem using the specification of research lags in econometric models to illustrate the problem of attributing aggregate productivity gains to research expenditures at different times.
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Опубликовано на портале: 30-11-2003
Samuel Benin, Melinda Smale, Berhanu Gebremedhin, John Pender, Simeon K. Ehui
2003
On farm conservation of crop diversity entails policy challenges, especially when the diversity of crops maintained on farms has both inter-specific (among crops) and infra-specific (within a crop) components. Survey data is used to compare the determinants of inter- and infra-specific diversity on household farms in the highlands of northern Ethiopia. Physical features of the farm, and household characteristics such as livestock assets and the proportion of adults that are men, have large and significant effects on both the diversity among and within cereal crops grown, varying among crops. Demographic aspects such as age of household head and adult education levels affect only infra-specific diversity of cereals. Though there are no apparent trade-offs between policies that would enhance one type of diversity (richness) versus another (evenness), those designed to encourage infra-specific diversity in one cereal crop might have the opposite effect on another crop. Trade-offs between development and diversity in this resource-poor system are not evident. Market-related variables and population density have ambiguous effects. Education positively influences cereal crop diversity. Growing modern varieties of maize or wheat does not detract from the richness or evenness of these cereals on household farms.
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Опубликовано на портале: 29-11-2003
Catherine Benjamin, Isabelle Piot
2002
The European Union beef market regulation is largely influenced by the Common Agricultural Policy (CAP). With the 1992 CAP reform, there was a partial shift by the EU from product price support to a more direct form of income support by way of direct payments. For beef there was a move to direct payments on intermediate products which was essentially a direct payment for the possession of various categories of animals and these were linked to a land resource base. The Agenda 2000 reform consists in a further price decrease associated with an increase in direct payments. The objective of this paper is to assess how the behaviour of beef producers is sensitive to changes in production prices and to changes in premiums. The analysis relies on an analytical framework which allows to take into account the dynamic feature of beef production and the subsidies provided by the Common Agricultural Policy. We studys how the beef supply response is modified when various exogenous variables like prices or premiums are changed. The application focuses on the dynamics of beef supply response in the French beef sector.
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Опубликовано на портале: 29-11-2003
Istvan Feher, Zsolt Papp
2002
Based on the Policy Analysis Matrix (PAM) approach this paper provides an assessment of the competitive position of the Hungarian agro-food industry in view of EU integration. The situation in the food processing sector is assessed with the use of actual cost data from representative Hungarian companies. The paper presents an assessment of the current situation prior to EU integration as well as a future outlook under various scenarios with regard to the expected policy environment and the rate of technological change. The actual measurement of competitiveness in this study focuses mainly on Private Resource Cost (PRC) which indicates competitiveness under real market conditions and Domestic Resource Cost (DRC) which gives an assessment on the social or economic efficiency of an activity, i.e. whether domestic resources are really used efficiently in current production. In the food processing sector 21 different food products have been investigated which fall into four industries: meat, poultry, dairy, and fruits and vegetables. Under current conditions only some products are competitive in private terms. The situation would improve after EU integration especially for poultry, fruits and vegetables, because agricultural policy conditions are more favourable under the CAP. If additional FDI(Foreign Direct Investments) would flow into the country after EU membership, this would boost profitability. As far as DRC values are concerned, it must be stated that only some of the production activities are clearly efficient. Dairy, fruits and vegetables, and roast goose production show relatively weak social competitiveness, while other poultry and fruit and vegetables products are more favourable from the economic point of view. As EU policies provide on average higher protection levels, the competitiveness of Hungarian food processing on world markets would deteriorate for most products after EU accession. However, these effects can be offset by additional technological change due to FDI inflows or otherwise induced technological progress.
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Опубликовано на портале: 04-01-2004
Achim Fock, Peter Weingarten, Olaf Wahl, Mikhail Prokopiev
Boston: Kluwer Academic Publishers, 2000, 271-297 с.
The paper analyzes the impact of different agricultural trade policies on Russia’s bilateral trade patterns, price and quantity changes, and welfare effects for producers, consumers, and the state budget. Three experiments are simulated using a partial equilibrium model based on the Armington approach. The results show that the current situation of import tariff-free trade between Russia and other CIS countries has small positive welfare effects for the Russian Federation in comparison to a situation where import tariffs between these countries were to be imposed.

However, according to the results, an elimination of import tariffs against all trading partners is preferable for Russia in terms of net welfare. An increase in discriminatory trade barriers against non-CIS countries would cause overall welfare losses for the Russian economy.
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Опубликовано на портале: 24-12-2003
Steven Franzel, Donald Phiri, Paramu Mafongoya
Durban, 2003
Although there is increasing emphasis on targeting of improved technology towards poor and female farmers, few adoption studies assess the uptake of new practices by these groups in a comprehensive manner.

In this study, community members used the wealth ranking method to identify the different wealth groups in their communities, to determine each household.s wealth status, and to assess the association of wealth and different types of households with the planting of improved tree fallows, a practice for improving crop yields. There were no significant differences between the proportions of women and men planting improved fallows nor were there differences between single women and female heads of households who were married. There was some evidence of association between planting improved fallows and wealth. That 22% of the .poor. group and 16% of the. very poor. group were planting them suggests that there are no barriers preventing low-income households from doing so. Moreover, the proportion of females, poor, and very poor people planting improved fallows varied considerably among villages, suggesting that opportunities exist for increasing their use of the technology. Whereas the use of mineral fertilizer is strongly associated with high- income, male farmers, improved fallows appear to be a gender-neutral and wealth-neutral technology. Poor farmers appreciate improved fallows because they permit them to substitute small amounts of land and labour for cash, their most scarce resource. Finally, the high degree of consistency among different key informants in classifying households among wealth groups confirmed the effectiveness and accuracy of the wealth ranking exercise.
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Опубликовано на портале: 30-12-2003
Lilyan E. Fulginiti, Richard K. Perrin, Bingxin Yu
Durban, 2003
Agricultural productivity in 41 Sub-Saharan Africa (SSA) countries from 1960 to 1999 is examined by estimating a semi-nonparametric Fourier production frontier. Over the four decades the estimated rate of productivity change was 0.83% per year, although the average rate from 1985-99 was a strong 1.90% per year. Former UK colonies exhibited significantly higher productivity gains than others, while Liberia and countries that had been colonies of Portugal or Belgium exhibited net reductions in productivity. We measure a significant reduction in productivity during political conflicts and wars, and a significant increase in productivity among those countries with a measure of political rights and civil liberties.
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Опубликовано на портале: 20-04-2004
Представлены материалы научной конференции, проведённой университетом штата Мэриленд и Аналитическим центр АПЭ 6-7 июля 2001 г. в Голицино-2. Цель конференции, посвященной исследованию рынков факторов производства в АПК России, - оценить степень изученности проблемы и наметить направления исследований в данной области по программе "Базис".
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Опубликовано на портале: 31-12-2003
John Helming, Jack Peerlings
Durban, 2003
A modelling system is presented and used to analyse the effects of EU dairy policy reform (Agenda 2000 and milk quota abolition with and without decoupled direct income payments) on Dutch agriculture and economy. The modelling system consists of a regionalised, agri-environmental, partial equilibrium, mathematical programming model of agriculture supply in the Netherlands integrated into a mixed input- output model. It was e.g. found that decoupling of direct income payments gives an extra stimulus to milk production after milk quota abolition. However, the increase in milk production is restricted by nutrient and manure policies in the Netherlands. It is also found that, although the total effect on Dutch GDP is limited, the income effects for individual industries can be large. Moreover, economy wide effects for non- agricultural industries exceed changes for agriculture.
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Опубликовано на портале: 29-11-2003
John Helming, Jack Peerlings
2002
A modelling system is presented and used to analyse the impact of milk quota abolishment on Dutch agriculture and economy. The modelling system consists of a regionalised, agri-environmental, partial equilibrium, mathematical programming model of agriculture supply in the Netherlands integrated into a mixed input-output model. It was found that abolition of the milk quota system has large impacts on milk production and livestock numbers and composition. The latter is explained by the strict mineral and manure policies in the Netherlands; an increase in the numbers of dairy cows leaves less room for other livestock. It is also found that, although the total effect on gross value added in the Dutch economy is limited, the effects for individual industries can be large.
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Опубликовано на портале: 31-12-2003
Rui Huang, Lilyan E. Fulginiti, E. Wesley Peterson
Durban, 2003
A three period overlapping generations model is developed to investigate the impact of shorter life expectancy due to disease, on human capital investment decisions and income growth. This research is particularly relevant to Sub-Saharan Africa given the dramatic reduction in life expectancy due to HIV/AIDS and the potential lasting effects on growth. Our results indicate that as life expectancy shortens so does schooling inducing a lower growth rate of income. These relationships are even more pronounced for the African continent than for the rest of the world.
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Опубликовано на портале: 29-11-2003
Michiel Keyzer, Max Merbis, Ferdinand Pavel
2002
The paper argues that current long-term projections of global meat and feed demand may underestimate future consumption patterns for mainly two reasons. First, they do not explicitly consider increased demand for protein foods of animal origin with rising incomes in some developing contries, and second they do not allow for changes in livestock technology, in particular feed demand. We then project the impact of both mechanisms to show the empirical relevance of our comments and suggest ready-to-use tools to consider them within standard projection models.
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Опубликовано на портале: 04-01-2004
Andrzej Kwiecinski, Natasha Pescatore
Boston: Kluwer Academic Publishers, 2000, 111-127 с.
The level of support provided to Russian agriculture, as measured by the Producer Subsidy Equivalent (PSE), may be used as a criterion to divide the period from 1986 to 1997 into three distinct phases: a phase of very extensive support during the Soviet period, a phase of negative at the beginning of the transition period and increasing in more recent years, with the exception of 1997 when the level of support fell again. It is highly likely that Russia’s PSE will fall again in 1998 as a result of the strong devaluation of the ruble in August 1998, further cuts in budgetary support for agriculture and some reductions in charges on food imports.
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Опубликовано на портале: 04-01-2004
Riitta Maijala, Jukka Peltola
Zaragoza, 2002
When joining the EU, Finland was granted a permission to run its own food safety policy concerning Salmonella. The policy is called Finnish Salmonella Control Program (FSCP) and it covers the main animal production lines: pork, beef, poultry, and also the products thereof e.g. meat and eggs. By committing to follow an EU Commission approved national program Finland received so called additional guarantees from the EU. These guarantees allow it to require respective salmonella protection levels from similar products imported to the country. In order to continue the program its economic efficiency has to be thoroughly evaluated.

The objective of FCSP is that no more than 1 % of the animals and meat should be contaminated with Salmonella at the national level. Respectively, at the abattoir or meat cutting plant level the goal is 5 % . These quite strict objectives were reached well in 1995-2001. The industry is responsible for running the program in practice. National authorities have their emphasis in coordination, collecting of data and supervision. The costs of the program are almost fully carried by the industry. This paper evaluates the efficiency and viability of FSCP as a whole. It can be concluded, that money used running the program is well-spent: health benefits produced, estimated either using a cost-of-illness type of calculations or a willingness-to-pay measure from a consumer survey are many times larger than the costs of the program. In the end it can be concluded that FSCP is a good example of economically viable tool for sustaining public health.
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Опубликовано на портале: 07-10-2008
Ariel Pakes, Ulrich Doraszelski
Amsterdam: Elsevier Science, 2007, cерия "Handbooks in Economics", 3
This paper reviews a framework for numerically analyzing dynamic interactions in imperfectly competitive industries. The framework dates back to Ericson and Pakes [1995. Review of Economic Studies 62, 53–82], but it is based on equilibrium notions that had been available for some time before, and it has been extended in many ways by different authors since. The framework requires as input a set of primitives which describe the institutional structure in the industry to be analyzed. The framework outputs profits and policies for every incumbent and potential entrant at each possible state of the industry.
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